August 2026
Intermediate
538 pages
15h 38m
Portuguese (Portugal, Brazil)
book
Java em poucas palavras (Portuguese Edition), 9th Edition
by Benjamin J. Evans, Jason R. Clark, David Flanagan
Content preview from Java em poucas palavras (Portuguese Edition), 9th Edition
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Capítulo 1. Introdução ao ambiente Java
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Bem-vindo a Java em 2026.
Talvez você esteja chegando ao mundo do Java vindo de outra área, ou talvez essa seja sua primeira experiência com programação de computadores. Seja qual for o caminho que você tenha percorrido para chegar até aqui, seja bem-vindo — estamos felizes por você ter chegado.
Java é um ambiente de programação poderoso e de uso geral. É um dos ambientes de programação mais usados no mundo e vem fazendo um sucesso incrível na computação empresarial e corporativa há mais de 30 anos.
Neste capítulo, vamos preparar o terreno descrevendo a linguagem Java (na qual os programadores escrevem suas aplicações), o ambiente de execução do Java (conhecido como “Máquina Virtual Java”, que de fato executa essas aplicações) e o ecossistema Java (que oferece grande parte do valor do ambiente de programação às equipes de desenvolvimento).
Esses três conceitos (linguagem, ambiente de execução e ecossistema) costumam ser chamados simplesmente de “Java”, com o uso preciso sendo deduzido pelo contexto. Na prática, são conceitos tão interligados que isso não é tão confuso quanto pode parecer à primeira vista.
Vamos abordar rapidamente o ciclo de vida de um programa Java, depois esclarecer algumas dúvidas comuns sobre o Java e, em seguida, passar a discutir as diferenças entre o Java e outros ambientes. Como o Java já existe ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.